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Summary: This article focuses on the sliding mode control of a class of interval type‐2 fuzzy systems with immeasurable states. During the data transmission from the sensor to the controller, the intermittent denial‐of‐service (DoS) attacks may be launched by vicious opponents. A key issue is to evaluate the tolerable region of the attacks for keeping the desired dynamic performance of the controlled interval type‐2 fuzzy systems. To this end, two weighting coefficients are first introduced to construct new membership functions. Based on this, a switched interval type‐2 fuzzy estimator is proposed to estimate the immeasurable state and compensate for the lost measurements caused by DoS attacks. And then, considering different DoS statues, a switched sliding mode controller transiting between the attack free and active cases is synthesized such that the specified sliding surface can be reached. In addition, the acceptable DoS region is quantitatively analyzed via a switched Lyapunov function. It is proven that the input‐to‐state stability of the sliding mode dynamics and the error system can be ensured within this tolerable DoS region. Finally, a simulation example is provided to illustrate the proposed control scheme. [ABSTRACT FROM AUTHOR]

This study copes with the guaranteed cost problem for a class of Markovian jump Lur'e systems via sliding mode control technique, in which the scheduling of controller signals towards the actuators is regulated by the Round‐Robin protocol. This means that at each transmission instant, only one actuator node can access the transmission network and the other actuators cannot obtain any new control information. In order to deal with this phenomenon, an updating rule as compensator is proposed, based on which the other actuators utilise the past control signals stored in the corresponding buffers. Then, a mode‐token‐dependent sliding mode controller is designed, in which the characteristic of the Lur'e non‐linearities is involved. Furthermore, by introducing a new token‐dependent Lur'e‐type Lyapunov function, the stochastic stability of the resultant closed‐loop systems is analysed, and the guaranteed cost performance is attained. Finally, a dynamic Leontief input–output model is adopted to illustrate the proposed method. [ABSTRACT FROM AUTHOR]

Summary: This work considers the sliding mode control problem of a class of discrete‐time uncertain switched systems subject to detecting‐delay on mode signals, which may result in the asynchronous phenomenon between the controller and the switched system. Since the mode information of the controlled system is not available for the controller in time, a mode‐independent sliding surface will be introduced, by which an asynchronous sliding mode controller is designed, whose control gain and robust parameter will be changing according to the controller mode. In the analysis on the stability of the closed‐loop control system and the reachability of the specified sliding surface, the asynchronous characteristics are detailedly investigated. It is shown that the Lyapunov function may be not always decreasing along the state trajectories during the unmatched interval of controller modes and system modes. Nevertheless, it is proven that the state trajectories can be driven into a sliding region around the specified sliding surface in finite time. Finally, some numerical simulation results are provided. [ABSTRACT FROM AUTHOR]

In highland areas worldwide, socioeconomic globalization is progressing urbanization and environmental destruction. Urbanization is caused by socioeconomic globalization of development of transportation, movement or immigration of people, and prevailing market economy. Lifestyle-related diseases, such as diabetes and hypertension, are increasing worldwide with greater longevity and changes in lifestyles. Highland areas may also be affected by globalization and the people living there may be especially vulnerable. Our objective was to disclose the features of lifestyle-related diseases and the human aging phenomena of highland people affected by their increasingly urbanized lifestyles by undertaking a detailed geriatric assessment. Our assessment included firstly comparing the prevalence of hypertension and neurobehavioral functions in community-dwelling Tibetan elderly in Shangri-la, Yunnan, China (altitude 3,300 m) with Thai elderly in the city of Jing Hong, Yunnan, China (altitude 500 m) and Japanese in Tosa, Kochi, Japan (altitude 300 m). Secondly, differences in the prevalence of hypertension, obesity, and neurobehavioral function were analyzed between people in an urban area, Jiang Tang, and rural areas and in association with their economic status in Nish in Shangri-la. High prevalences of lifestyle-related diseases such as hypertension and obesity were shown in highlanders, especially those in an urban area. Geriatric functional ability was associated with economic status. Notwithstanding a higher prevalence of physical disorders and lowered functional abilities, a higher quantitative quality of life was found in Shangri-la than in Tosa. We concluded that highland-dwelling people were vulnerable and susceptible to lifestyle-related diseases resulting from socioeconomic globalization. [ABSTRACT FROM AUTHOR]